44caliber | 8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
10-09-2023 18:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe
Size

3.2MB
MD5

e96c81e32069fcfb94da98c9be02a855
SHA1

bd4146f93ce56aeac1ec5b5ac9fe5af1dab81701
SHA256

8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f
SHA512

8df7a9b026dc1a4a7aa7567cc5db31fded149126cb5782ee76e9a433ea37194bdcd2b69070daf7a3ee8a866d939d40ec9204f79453bef85b397bc70840e273b3
SSDEEP

49152:YIun087q30q/a6rrfvitpxOUMlHUK5XejfEOVpZ6MZj9X5myer3lPO8H5u:YL0OzqS6rr2YxlHejsO3Z9Z/m9re

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1150051435472498830/YhoiwXwAAKsBrBSJ0St12JGqZ_ebCKHh9rfhnswtrjkVxmov8EdH-iOO0gTBXrngx-L8

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Executes dropped EXE 1 IoCs

pid	Process
2052	F2.exe

Loads dropped DLL 4 IoCs

pid	Process
2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe
2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe
2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe
2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	freegeoip.app
3	freegeoip.app

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	F2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	F2.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2052	F2.exe
2052	F2.exe
2052	F2.exe
2052	F2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	F2.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2748	DllHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2052	2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe	28
PID 2348 wrote to memory of 2052	2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe	28
PID 2348 wrote to memory of 2052	2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe	28
PID 2348 wrote to memory of 2052	2348	8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe	28

C:\Users\Admin\AppData\Local\Temp\8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe
"C:\Users\Admin\AppData\Local\Temp\8b919845a9b13861d7095a64e5e2db3298021bccc7962fd7995b9de9e76b268f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\F2.exe
  "C:\Users\Admin\AppData\Local\Temp\F2.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2052

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\screen.png

Filesize
2.6MB

MD5
9e836d4893b3ea51880a40e9f14a55a1

SHA1
479d931a14e6bb75d6e965097f94cef8497a6103

SHA256
feacea34a4fa4e39646c04adbe5ccd7152c15ef7dc9648d1f6a70e5be918b626

SHA512
de6151c733e8da32a688a419d1f8cc9929b095d569e42b0f41c1fc9ba22fb200c49df494f159ce6fc398884bc9f39d37a4b750955327e757ecddaa4595327c9e

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
397B

MD5
39d8d13eff21e4710d520a3b42a5b133

SHA1
11ae31d402f6fb752a39760efc7543f0b960f108

SHA256
a4646db947c1b9a67514c7c8e0dc9e953ae4d4900735c495b4c94deedcb852b2

SHA512
921969e96cde953fe93bc8e30c745ecb25ddcb5509745870694336595d96cfb84cc1733bf130f2d6aacd7619130307594a15a133594fa3fa978549b9bc054e9f

Download Submit
\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
\Users\Admin\AppData\Local\Temp\F2.exe

Filesize
274KB

MD5
39ff6663f1a341e3ee70073244014988

SHA1
8ccfae8001536cc2386cda09cd257a29d5e61f81

SHA256
d3654319e1b0e888468008ef9190923bd9e5098e7aca7e1e661ea896d9ed1d9e

SHA512
2f3da46a50003e13bb0b4d88a0eb7878fc1c1b98e091cc2a3352922c93b98a7f46f8ad07a77c7be8faec0ebb421e03a06321a949c9ce1d481f64a5366658d1ca

Download Submit
memory/2052-22-0x000000001B130000-0x000000001B1B0000-memory.dmp

Filesize
512KB

Download
memory/2052-20-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-19-0x0000000000940000-0x000000000098A000-memory.dmp

Filesize
296KB

Download
memory/2052-71-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2348-17-0x00000000023B0000-0x00000000023B2000-memory.dmp

Filesize
8KB

Download
memory/2748-21-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2748-18-0x0000000000150000-0x0000000000152000-memory.dmp

Filesize
8KB

Download
memory/2748-72-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download